fix image generation

[wolflu05]

No description provided.

[github-actions]

Coverage Report

Name	Stmts	Miss	Cover	Missing
inventree_bulk_plugin/BulkGenerator/BulkGenerator.py	167	0	100%
inventree_bulk_plugin/BulkGenerator/dimensions.py	66	0	100%
inventree_bulk_plugin/BulkGenerator/generators/gen_alpha.py	36	0	100%
inventree_bulk_plugin/BulkGenerator/generators/gen_numeric.py	14	0	100%
inventree_bulk_plugin/BulkGenerator/generators/generator.py	33	0	100%
inventree_bulk_plugin/BulkGenerator/template.py	29	0	100%
inventree_bulk_plugin/BulkGenerator/utils.py	19	0	100%
inventree_bulk_plugin/BulkGenerator/validations.py	54	0	100%
inventree_bulk_plugin/api.py	69	0	100%
inventree_bulk_plugin/bulkcreate_objects.py	323	0	100%
inventree_bulk_plugin/core.py	42	0	100%
inventree_bulk_plugin/migrations/0001_initial.py	6	0	100%
inventree_bulk_plugin/models.py	21	0	100%
inventree_bulk_plugin/serializers.py	53	0	100%
TOTAL	932	0	100%